August 25, 2020
The median of the absolute value sorting sequence is analyzed to reflect
For this reason,
the absolute difference D between the mean value of the improved data series and
the median of the absolute value sorting sequence is analyzed to reflect whether
the data is robust under different significance levels.
The robust data is shown
in the figure 4-13, the calculation results are shown in , the average range of friction torque is [0.1 When the
value of D, is the smallest, that is, 10% of the friction torque data is
discrete data. Therefore, this part of the discrete data is robustly processed
to obtain the friction torque robust data and use these data to obtain the prior
density function.
Rolling bearing friction torque data analysis: Now take A
rolling bearing as an example to analyze the average value of rolling bearing
friction torque as shown in Figure 3-1, and rolling bearing friction torque
performance parameters are shown in Table 8-1. According to the comparison of
the data in Table 8-1 and Table 8-2, it is found that the average value and
variance of the data after the robustness processing (that is, the prior density
function parameters) are smaller than the average value and variance of the
original data, indicating that the data robustness processing is indeed reduced
The influence of discrete data on overall data is discussed.
The results are
shown in Figure 8-2.3533888. In addition, these three The change trend of the
parameters has no obvious law, which shows that the size, distribution and
change trend of the friction torque data of rolling bearings are diverse and
complex. In order to better analyze the characteristics of the friction torque
of the rolling bearing, the robust processing method of the data is used to
obtain the prior density function of the friction torque of the rolling bearing.
It can be seen from the parameters that the median range of friction torque of
rolling bearings is [. Table 8-1 shows the comparison of the median, average and
variance of the performance parameters of rolling bearing friction wheel bearing
kits torque as the significance level increases, the value
of D decreases, indicating that there are some discrete data in the friction
torque data; at the significance level 0.
Posted by: Chinabeltkit at
03:49 AM
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August 18, 2020
Look at the appearance and brightness of the bearing
If it is lower than that, it is a fake. Appearance: Look at the appearance and
brightness of the bearing. The purchase of counterfeit and inferior bearings
drove the profit belt and gave the black factory a gap to take advantage of. How
to distinguish the Wholesale non-standard
bearings suppliers quality of the bearing: Color: Appearance color, the real
color is bright and delicate, and the fake one is rough and rough.
Fake bearing
products are full of the market, but due to their inherent quality defects and
low precision, they have potential great harm, which will bring great economic
losses to users. In addition, many consumers do not know how to distinguish the
pros and cons of bearings and are absorbed by low prices. So learning to
distinguish is very important. Stamp: The stamp on the genuine bearing is also
very clear. Let's follow the editor of K-type bearing to learn together.
The
bearing will be printed with brand words and labels on the bearing body.
Quality: The materials of the original parts are qualified materials according
to the design requirements, and the counterfeit products are mostly low-cost and
inferior materials. The corners of the bearing are black. The fake model will be
wiped off.
Due to the imperfect legal system of the current socialist market,
some shoddy bearing factories have been tempted by huge interests to be shoddy. Although the font is small, the stamping was stopped before the heat treatment.
The genuine model is laser-engraved and it is not afraid of rubbing
Posted by: Chinabeltkit at
01:23 AM
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